All the Cinque Terre towns have their own train station. Almost all the trains from La Spezia stop in Levanto. Check your train schedule carefully-some trains that stop in La Spezia, also stop in Levanto, so you do not need to change in La Spezia.
PAR is an acronym for parabolic aluminized reflector. A PAR lamp, which may utilize either an incandescent filament, a halogen filament tube or a HID arc tube, is a precision pressed-glass reflector lamp. PAR lamps rely on both the internal reflector and prisms in the lens for control of the light beam.
The unit einstein is sometimes used to refer to one mole per square meter per second. It means that each second a 1 square meter of surface has 6 x 1023 photons falling on it. Irradiance levels for plant growth can therefore be measured in micro-einsteins or in PAR watts/sq. meter. 400 watt HPS lamps has less PAR, typically 120 to 128 watts, but because the light is yellow it is rated at higher lumens (for the human eye). Illumination for plants is measured in PAR watts per square meter.